title: American Society of Anesthesiology classification may predict severe post-tonsillectomy haemorrhage in children.
mesh_terms: D000233:Adenoidectomy; D000556:Ambulatory Surgical Procedures; D000776:Anesthesiology; D016022:Case-Control Studies; D002648:Child; D005260:Female; D006801:Humans; D015994:Incidence; D008297:Male; D019106:Postoperative Hemorrhage / Q000453:epidemiology*; D012189:Retrospective Studies; D012307:Risk Factors; D012955:Societies, Medical; D014068:Tonsillectomy